Don't you wish the BBC would produce some hard SF?
Dr. Who isn't written by scientists, they don't have a scientific consultant as far as I know. Bluntly, it's scientific credibility is non-existent.
I don't begrudge the show its success, and recognise the pleasure it gives it's fans - but it is annoying if 'Dr Who' is regarded by the BBC as fulfilling the need to provide SF drama to its audience.